N20 air permeability detector

Abstract

The invention discloses an N20 air permeability detector. The N20 air permeability detector comprises a box body, a detection device, a laminar flow element, a pressure adjusting device and a PLC; a human-computer interface is arranged at the right end of the top surface of the box body; a printer is arranged at the left end of the top surface of the box body; a pressure regulating valve interface, a test interface, a test head cylinder interface, a test head cable interface, a manual test switch and a key switch are arranged on the front surface of the box body; and a high-precision pressuresensor, a high-precision differential pressure sensor and a stepping motor controller are arranged in the box body; the detection device is composed of a test head and an automatic paper guide system;the pressure adjusting device comprises an electromagnetic valve, a precision pressure adjusting valve and a stepping motor; and the PLC is installed in the box body. The detector is simple in structure, easy and convenient to operate, capable of automatically counting and outputting printed measurement results, convenient for a user to process and store data and high in accuracy.

Description

technical field [0001] The invention relates to an instrument for testing or analyzing materials by means of measuring the physical properties of the materials, in particular to an air permeability detector. Background technique [0002] Cigarette ventilation and dilution technology is an important means of reducing harm and coke in cigarettes. It can effectively reduce most substances in cigarette smoke, especially for gas phase components with high diffusion coefficients; cigarette filter dilution The rate is generally controlled by the perforated air permeability of the tipping paper used on it. Researchers have found that the use of perforated tipping paper can effectively control the amount of tar in cigarettes. This technology is used as a newer and more effective tar reduction method. Technology is developing rapidly, and the air permeability of perforated tipping paper directly affects the amount of tar in cigarettes; therefore, in order to maintain a stable taste an...

AI Technical Summary

Problems solved by technology

[0005] Compared with the original technology, the structure of the system is simpler, easy to repair and maintain, and the manufacturing cost of the equipment is lower, which is convenient for popularization and application; however, the test paper of this scheme is placed manually, and it needs to Shut down the equipment and replace with new test paper to continue the measurement, and the test paper cannot be continuously measured

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